Home / 911,419.85-1,257,755.31-503,521.76

Finding the Fourth Proportional to 911,419.85, 1,257,755.31 and 503,521.76

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Solution

The fourth proportional to 911,419.85, 1,257,755.31 and 503,521.76 is: 694,857.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,419.85 : 1,257,755.31 = 503,521.76 : x
  2. Step 2: Convert to fraction form
    911,419.85/1,257,755.31 = 503,521.76/x
  3. Step 3: Cross multiply
    911,419.85x = 1,257,755.31 × 503,521.76
  4. Step 4: Simplify right side
    911,419.85x = 633,307,161,051.77
  5. Step 5: Solve for x
    x = 633,307,161,051.77/911,419.85
  6. Step 6: Final answer
    x = 694,857.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.